DOCSLIB.ORG

Optical Filters Intro Windows Filter Specifications

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Optical Filters Intro Windows Filter Specifications Optical Filters Intro Windows Filter Specifications . 286 Filter Selection Guide. 288 Prisms Custom and Image Filters . 291 Interference Filters . 292 Lenses High Rejection Laser Line Filters . 302 Notch Filters . 304 Mirrors Edge Filters . 305 Beamsplitters Long Pass Filters. 306 Short Pass Filters . 307 Waveplates Variable Bandpass Filters . 308 Glass Substitute Filters . 309 Polarizers Color Process Filters . 310 Schott Color Glass . 312 Components Ultrafast Neutral Density Filters . 319 Variable Neutral Density . 322 Etalons Storage Cases. 324 Circular Filter Mount . 324 Filters Heat Control Filters Interferometer Hot Mirrors. 325 Accessories Cold Mirrors . 325 Dielectric Attenuators . 326 Mounts Spectrophotometer Appendix Calibration Filters. 328 ������� CCD System Equalizer Filters . 331 ���������� Index �������������� Optical Filters Intro Specifications Following is a short review of filter dependent variable determined by your in units of Optical Density (O.D.). Windows specifications to assist you in formulating requirements for center wavelength, full 1 Optical Density (O.D.) = — Log requirements for your particular width at half maximum, transmittance, T 10 application. CVI maintains a qualified and blocking. A CVI applications engineer where T= transmission. Prisms staff of applications engineers to assist you will be happy to help you with any in selecting the best product available at questions. The rejection range in nanometers must the minimum cost. accompany this specification. Out-of-Band Rejection Lenses Center Wavelength Filter Dimensions Out-of-Band Rejection (Blocking) is the Center Wavelength (CWL) is the amount of energy, outside the filter pass Filter dimensions are specified in inches arithmetic mean of the pass band band, transmitted through the filter. It is or millimeters, along with tolerances. Mirrors expressed in nanometers. For instance, often expressed as an absolute level, such Standard sizes are 0.50" Ø, 1.00" Ø, and a HeNe laser filter would have a center as 10-4, meaning there are no transmission 2.00" Ø. Standard interference filters are wavelength of 632.8nm. peaks outside the pass band exceeding mounted in a black anodized aluminum Center wavelength tolerance: 0.0001 T or 0.01% T. Values are specified ring to provide a higher quality filter. The Beamsplitters ± 20% of FWHM Percent Transmission ��� ��� ���� ���� Waveplates Percent Transmission is the amount of ����������� �� ����������� �� power received by the detector compared to the total power available. The Polarizers ������������ ����������� � � traditional formula is %T = I/Io x (100), where Io is the incident power and I is the ����������� transmitted power. ��� ��� Ultrafast Components ���������������������������� Bandpass ���������������������������� ���� ���� Bandpass is the width of the pass band, Etalons measured in nanometers, at the half- ����� ����� �������� power points of the pass band. It is often Figure 1. Typical Band Pass�������� Shape of a Figure 2. Typical Band Pass Shape of a expressed as Full Width at Half Maximum One Cavity filter. Two Cavity filter. Filters (FWHM). ��� ��� ���� ���� Tolerance: ± 20% of FWHM ����������� ����������� Bandpass Shape �� �� Accessories Interferometer Bandpass shapes can vary from triangular ����������� � � ����������� to nearly square. The number of cavities in a filter describes the overall spectral Mounts ����������� ��� ����������� shape. The more cavities the filter has, ��� the more square the band shape. Typical ���������������������������� ���������������������������� shapes for a one cavity, two cavity, three ���� ���� Appendix cavity, and five cavity filters are shown in Figures 1, 2, 3, and 4. Please note that for ����� ����� �������� custom filters, the number of cavities is a Figure 3. Typical Band Pass Shape of a Figure 4. Typical Band Pass�������� Shape of a Index Three Cavity filter. Five Cavity filter. 286 Americas (505) 296-9541 | Europe +44 (0) 1624 647000 | Asia +82 (0) 32 673-6114 | Order now at www.cvilaser.com Optical Filters Intro Specifications Windows thickness for these standard ring mounted Environmental Considerations Custom filters can be manufactured to filters is 0.25 inches. Custom sizes and withstand more than 20 cycles of Filters are sensitive to changes in thicknesses are available, please contact a MIL-STD-810C. environment, with temperature and Prisms CVI sales engineer for more information. humidity being the most critical factors. Cosmetics Variation of Wavelength with CVI interference filters are designed CVI strives to give all of its products a Incident Angle for operation at 23 degrees Celsius. pleasing appearance. However, total Lenses These filters can be used throughout CVI’s standard interference filters are elimination of pinholes, inclusions, the temperature range of -50 to +100 designed for use at normal incidence in microscopic scratches, and other degrees Celsius as long as thermal shock is collimated light. Certain characteristics imperfections would dramatically increase Mirrors avoided. (Thermal shock can be avoided of thin film interference filters change filter costs. Careful attention is given to if the change in filter temperature is less with incidence angle. Center wavelength, ensuring that these minor defects do not than five degrees Celsius per minute.) Beamsplitters the most important parameter of a filter, affect filter performance. Temperature change causes the center varies approximately as a cosine function, wavelength to shift approximately 0.02nm Packaging shifting towards shorter wavelengths with per degree Celsius. See Figure 5. increasing angle. The following equation CVI filter products are packaged to Waveplates may be used to determine the wavelength promote optimum shelf life. Unless the at a certain angle of incidence: customer makes special arrangements, ����� filter products will be delivered in our Polarizers no 2 2 standard packaging. Filters are packaged in λ = λo √ 1 − ( ) sin φ neff ����� a protective envelope which is impervious to moisture. This envelope is then purged Components where ������������������������������� ����� with nitrogen and heat sealed which Ultrafast λ = Wavelength at Angle of Incidence ��� ��� ��� ��� ���� ���� λ������ minimizes environmental damage. λo= Wavelength at Normal Incidence φ = Angle of Incidence Figure 5. Temperature Coefficient vs. Cleaning Method Etalons no = Refractive Index of External Medium Center Wavelength. Optical filters are fragile and must be neff=Effective Refractive Index of Filter handled with care. CVI’s filter products Long-term exposure to extreme humidity are cleaned and inspected for quality may cause filter deterioration. A CVI Filters assurance before they are shipped to the applications engineer can provide customer. These products should be Number of Cavities by CWL additional information on this subject. Interferometer handled by the edges to avoid any damage Accessories CWL HBW Number Range (FWHM) of Environmental Specifications to the optical surfaces. When cleaning (nm) (nm) Cavities becomes necessary, please follow the Humidity: MIL-STD-810F, 193-326 -- na recommended cleaning method below: Method 507, Procedure 1 330-396.1 10.0 3 Mounts 400-1064 1.5 1 Abrasion: MIL-C-48497, Fold a lens tissue to a size just larger that 400-1064 3.0 2 Para. 3.4.3.1 20 eraser rub the optic being cleaned. Spray the folded 400-1064 10.0 3 Adhesion: MIL-C-48497, edge of the tissue with isopropyl alcohol. Appendix 400-1064 25.0 5 Para. 3.4.1.1 tape test Gently wipe the surface of the filter with 400-1064 40.0 5 Cleanability: MIL-C-48497, a straight sweeping motion. Do not reuse 400-1064 70.0 5 Para. 3.4.2.2 solvents a contaminated tissue as damage to the 1070-2500 10.0 2 1070-2500 12.0 2 Surface Quality: 80-50 scratch-dig optical surface may occur. Repeat the Index > 2500 -- na process if necessary. Americas (505) 296-9541 | Europe +44 (0) 1624 647000 | Asia +82 (0) 32 673-6114 | Order now at www.cvilaser.com 287 Filters Intro Selection Guide Transmission Filters Windows Product Type FWHM Peak % T Blocking Applications ��� �������������������� High Rejection Filter 1.4-4.0nm 90% > 6 OD Fluorescence �� HRF Raman �� Prisms � 302 Laser line clean-up �� �� l �� � ��� ��� ��� ��� ��� ��� ��� ��������������� Lenses � Interference Filters 3nm, 10nm, 25nm, 12-60% 3-5 OD Laser line clean-up � F 40nm, 70nm � 292-301 �� Mirrors l � ��������� � � ��� ��� ��� ��� ��� ��� ��������������� ��� Beamsplitters �� Variable Bandpass Sets Sets of LPF and 80% 3 OD Fluorescence VPFS SPF filters to mix Raman �� � 308 and match for Laserline blocking �� �� l user selectable ��� �� ��� Waveplates bandpass � ��� ��� ��� ��� ��� ��� ��� ��������������� Polarizers Blocking Filters Product Type FWHM Peak % T Blocking Applications � Ultrafast �������������������� � Components Notch Filters 17nm 90% > 6 OD Fluorescence � RNF Raman � 304 Laserline blocking �� � l � Etalons � � ��� ��� ��� ��� ��� ��� ��� ��� ��������������� ��� ��������� Filters �� Color Process 100nm 75% 2 OD Fluorescence �� CP �� � ��� 310 �� �� l �� � Accessories Interferometer ��� ��� ��� ��� ��� ��� ��� ��� ��� ��� ��������������� ��� Color Glass 200-400nm > 80% up to 5 OD Attenuation �� Mounts CG Isolation of �� � 312-318 Broadband Source �� �� l ���������� �� � ��� ���� ���� ���� ���� ���� ���� Appendix ��������������� Index continued 288 Americas (505) 296-9541 | Europe +44 (0) 1624 647000 | Asia +82 (0) 32 673-6114 | Order now at www.cvilaser.com Filters Intro Selection Guide Windows Edge Filters Product Type
Load more

Recommended publications
  • Dispersion and Filters
    Optical Filters: Dispersion and Filters Turan Erdogan, PhD (CTO and Co-founder) Semrock, A Unit of IDEX Corporation May 31, 2011 www.semrock.com Dispersion matters sometimes • Often we can sufficiently characterize the spectral performance of an optical filter by determining simply the amount of light intensity (I) it transmits (T(λ)) and it reflects (R(λ)) • T and R are called the “intensity transmission” and “intensity reflection” coefficients filter Iin IT = T(l)Iin IR = R(l)Iin 2 When dispersion matters • However, if the filter is used in an optical system that is sensitive to the phase of the light, we must use the “amplitude transmission” (t exp(iφt)) and “amplitude reflection” (r exp(iφr)) coefficients • t and r determine the amplitude of the electric field of the light that is transmitted and reflected, respectively, and φt and φr determine the change in phase of the electric field • The transmitted and reflected intensity is proportional to the square of the electric field filter 2 Iin = |Ein| phase Ein phase sensitive sensitive optical optical if (l) 2 Et = t(l)e t Ein IT = |Et| 2 system if (l) system IR = |Er| Er = r(l)e r Ein 3 When dispersion matters • Examples of cases when and where phase matters and the amplitude (rather than intensity) coefficients must be used include: . The filter is used in one arm of an interferometer, such that the light transmitted through or reflected off of the filter is coherently combined with light from the other arm or from elsewhere in the system . The filter is used to transmit or reflect a short pulse (<< 1 picosecond) such that its phase can cause the pulse to be chirped and therefore broadened or distorted filter 2 Iin = |Ein| phase Ein phase sensitive sensitive optical optical if (l) 2 Et = t(l)e t Ein IT = |Et| 2 system if (l) system IR = |Er| Er = r(l)e r Ein 4 Impact of optical filter dispersion • Consider the impact of dispersion on a short pulse reflected off of a filter with amplitude reflection coefficient r exp(iφ ) r filter .
    [Show full text]
  • F I L T E R K
    FILTERKIT 322 Woodwork Lane Palatine IL 60067 P: 847-359-3550 F: 847-359-3567 v2.1 [email protected] June16, 2009 www.midopt.com ABOUT MIDWEST OPTICAL SYSTEMS FK100 FILTER KIT CONTENTS ARTICLES Founded in 1988 as a manufacturer of custom precision Our continued commitment to optical components and systems, we have since been innovation has lead to the rotating Machine Vision Filters An overview involved exclusively in the design, manufacture, import Right Angle Attachment (left) that gives you more options for placing and export of vision-specific elements used by a diverse cameras in your system, and the Types of Filters The 8 major types of filters produced by MidOpt for machine vision applications variety of industries and end users. Over time, the company multi-purpose Slip Mount that lets has evolved and is now recognized worldwide as the premier you add filters to lenses when Machine v/s Photographic Filters Why photographic filters are not suitable for machine vision operations resource for filters, lenses and accessories used in industrial (1) there are no filter threads Testing with Filters Testing the effects of filtering and monochromatic lighting imaging applications. and (2) when a filter is desired for use on a wide- Increase Resolution Filters with High-Resolution and Telecentric Lenses; Chromatic Aberration By combining this extensive optics background with our angle lens. expertise in machine vision imaging, MidOpt continues Filter Applications UV Fluorescence, Polarizing, IR Blocking and Light Balancing Filters to develop economical and solutions for industrial image processing that are simply not found elsewhere. We provide FILTER NO.
    [Show full text]
  • UV Optical Filters and Coatings
    UV Optical Filters and Coatings BARR PRECISION OPTICS & THIN FILM COATINGS Materion Barr Precision Optics & Thin Film Coatings is a leading manufacturer and supplier of precision optical filters, hybrid circuits, flexible thin films and custom thin film coating services. We offer coating solutions for manufacturers in the defense, commercial, space, science, astronomy and thermal imaging markets. UltraViolet (UV) Optical Filters and Coatings Materion offers Ultraviolet (UV) optical filters and coatings used Material Options Include: in a wide variety of existing and emerging UV-based applications. n Metal-Dielectric Bandpass Filters, fully blocked from Whether the requirement is for small, prototype UV filter quantity, a the UV to IR “one-of-a-kind” coated optic, or for large-scale volume manufactur- n UVA, UVB Filters - fully blocked ing associated with an OEM application, Materion is equipped to n UV Filter Arrays, Discrete and Patterned meet the need. With Materion’s approach to filter design and manu- n UV Bandpass Filters with high transmission – facture, our filter design engineers work closely with our customers’ made with Environmentally-Durable Oxide Films optical system designers throughout the filter development process. n Mercury-line Isolation Filters such as i-line and g-line Filters The optical filters and coatings that result from this collaborative n AR-Coatings for UV Spectral Range process often serve to optimize the performance characteristics n UV Laser Bandpass Filters of our customers’ instruments and applications. When it comes to filter design and manufacture in the UV spectral range, Materion has n Solderable-metalized coatings developed an extensive library of manufacturing plans for UV filters n Wide UV Passband Filters (such as filters in UVC) and coatings which can be deployed or tailored to produce optical blocked for use with SiC or GaN Detectors filters, that best match customer requirements.
    [Show full text]
  • (12) Patent Application Publication (10) Pub. No.: US 2013/0258661 A1 Jousse Et Al
    US 20130258661A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2013/0258661 A1 Jousse et al. (43) Pub. Date: Oct. 3, 2013 (54) WHTE LED LIGHTING DEVICE AND A Publication Classification LIGHTINGAPPLIANCE (51) Int. Cl. (71) Applicant: MAQUET SAS, Ardon (FR) F2IV 9/10 (2006.01) F2IV33/00 (2006.01) (72) Inventors: Robin Jousse, La Chapelle Saint (52) U.S. Cl. Mesmin (FR); Cécilia Valteau, Ligny Le CPC ............... F2IV 9/10 (2013.01); F2IV33/0068 Ribault (FR); Lionel Comte, La (2013.01) Chapelle Saint Mesmin (FR) USPC ........................................... 362/235; 362/293 (57) ABSTRACT An LED lighting device (6) having an LED (8) emitting white (73) Assignee: MAQUET SAS, Ardon (FR) light and optical filter means (12) suitable for filtering the white light emitted by the LED (8). The optical filter means Appl. No.: 13/793.288 comprise at least two optical filters (12) that have different (21) transmission coefficients and that are positionable to filter the light emitted by the LED (8) individually. The lighting device (22) Filed: Mar 11, 2013 (6) includes a power supply unit (10) suitable for delivering different power supply currents to the LED (8) depending on (30) Foreign Application Priority Data whether one or the other of the optical filters (12) is positioned to filter the light from the LED (8), so as to modify the color Mar. 27, 2012 (FR) ...................................... 12 52735 temperature of the light emitted by the LED (8). Patent Application Publication Oct. 3, 2013 Sheet 1 of 3 US 2013/0258661 A1 S50 8 750 850 Wavelength an Patent Application Publication Oct.
    [Show full text]
  • Full Text [PDF]
    IPASJ International Journal of Electrical Engineering (IIJEE) Web Site: http://www.ipasj.org/IIJEE/IIJEE.htm A Publisher for Research Motivation ........ Email:[email protected] Volume 5, Issue 8, August 2017 ISSN 2321-5984 Spectral and Thermal Effects on the Transmission Modulation Depth and Attenuation Level Estimation of High Density Optical Filters Mr. M.K. Mathur JNTUH College of Engineering, Hyderabad ABSTRACT There are many operating parameters describing optical filter properties such as the amount absorbed electromagnetic radiation which depends on the operating signal wavelength; the amount of the absorbing material in the radiation path (filter thickness); and the absorption coefficient of the material at that wavelength. This paper has presented fused silica (SiO2) glass, polystyrene (PS) plastic and arsenide trisulfide (AS2 S3) glass band pass optical filters for visible and near infrared spectrum regions over wide range of the affecting parameters. Filter transmittance, filter optical density, attenuation level or blocking level, filter correlation factor, and transmission modulation depth are the major interesting design parameters under room temperature and high temperature effects. 1. INTRODUCTION Optical filters are devices which selectively transmit light of certain properties while blocking (absorbing) the reminder [1]. In general they’re sensitive to light of particular wavelengths (and in consequence color) or range of wavelengths. This property makes optical filters often used in many industrial applications. In many branches of industry source emitting intense non-visible radiation (for example white hot metal or glass) has to be monitored. Optical filters are often used for such applications. In such cases infrared (IR) or heat absorbing filters are used in order to block mid infrared wavelengths (thermal radiation) but allow visible light to be transmitted.
    [Show full text]
  • Schott Filter Catalog
    Definitions Glass Filters 2009 OPTICAL FILTERS TABLE OF CONTENTS Table of Contents Foreword ....................................................................................... 4 1. General information on the catalog data ..................................... 5 2. SCHOTT glass filter catalog: product line ..................................... 6 3. Applications for SCHOTT glass filters ............................................ 7 4. Material: filter glass ..................................................................... 10 4.1 Group names ................................................................................ 10 4.2 Classification ................................................................................. 10 4.2.1 Base glasses .................................................................................. 10 4.2.2 Ionically colored glasses ................................................................. 10 4.2.3 Colloidally colored glasses ............................................................. 11 4.3 Reproducibility of transmission ...................................................... 11 4.4 Thermal toughening ..................................................................... 11 5. Filter glass properties .................................................................. 13 5.1 Mechanical density ........................................................................ 13 5.2 Transformation temperature .......................................................... 13 5.3 Thermal expansion .......................................................................
    [Show full text]
  • Optical Filter Glass
    Optical Filter Glass Product Information SCHOTT offers one of the world’s largest portfolios of optical filter glasses for a full spectral solution for your requirements. SCHOTT’s optical filter glasses include the following filter types in the wave- length range above 200 nm: • Bandpass filters • Longpass filters • Shortpass filters • Neutral density filters • Contrast enhancement filters • Night Vision compatible filters • Multiband filters Advantages • High transmittance • High blocking • Spectral properties are independent on angle of incidence • Superior quality, reliability and durability Quality Assurance Forms of Supply Quality control is based on statistical • Polished plates according to customers request, typically up to 200 mm x 200 mm process control as well as on rigorous • Polished filters also available as coated or framed parts reflecting customer’s final inspection. Measurement instru- specifications ments include a broad range of spec- • Larger dimensions upon request trophotometers, vision systems, etc. Market Segments Application Support Reliable manufacturing with strong technical glass expertise enables SCHOTT to SCHOTT is “Your Partner for Excellence serve the following markets: in Optics” and a sparing partner to de- velop, design and choose the right filter Aviation Homeland Security Law Enforcement for your requirements. Please contact us Medical Pharmaceutical Life Science with your specifications. Automotive Consumer Optics Industrial Version September 2018 | SCHOTT Advanced Optics reserves the right to make
    [Show full text]
  • Optical Filter Glass
    Optical Filter Glass Product Information SCHOTT offers one of the world’s largest portfolios of optical filter glasses for a full spectral solution for your requirements. SCHOTT’s optical filter glasses include the following filter types in the wave- length range above 200 nm: • Bandpass filters • Longpass filters • Shortpass filters • Neutral density filters • Contrast enhancement filters • Night Vision compatible filters • Multiband filters Advantages • High transmittance • High blocking • Filter curve hardly depending on light angle • Superior quality, reliability and durability Quality Assurance Forms of Supply Quality control is based on statistical • Polished plates according to customers request, typically up to 200 mm x 200 mm process control as well as on rigorous • Polished filters also available as coated or framed parts reflecting customer’s final inspection. Measurement instru- specifications ments include a broad range of spec- • Larger dimensions upon request trophotometers, vision systems, etc. Market Segments Application Support Reliable manufacturing with strong technical glass expertise enables SCHOTT to SCHOTT is “Your Partner for Excellence serve the following markets: in Optics” and a sparing partner to de- velop, design and choose the right filter Aviation Homeland Security Law Enforcement for your requirements. Please contact us Medical Pharmaceutical Life Science with your specifications. Automotive Consumer Optics Industrial Version May 2013 Version Advanced Optics SCHOTT AG Hattenbergstrasse 10 55122 Mainz Germany
    [Show full text]
  • Optical Filters Go Deeper
    OpticalOptical FiltersFilters GoGo DeeperDeeper A new generation of optical filters benefits optical applications in the mid-UV. by Dr. Turan Erdogan and Dr. Atul Pradhan, Semrock Inc. he importance of optical ap- and/or multiple laminated absorb- other type of ion source and directed plications in the middle-ultra- ing and transparent glass substrates at a metal or metal-oxide target. With T violet spectral region — be- cannot withstand the intense ener- sufficient energy, atoms are sput- tween about 200 and 320 nm — con- gies of illumination at mid-UV wave- tered from the surface of the target, tinues to increase with the advent of lengths. Hybrid metal-dielectric fil- where they subsequently migrate and new excitation light sources in this ters also have poor optical damage then deposit onto a nearby glass sub- range, also identified as the UVC (200 thresholds, and inadequately low strate by random diffusion (Figure to 280 nm) and UVB (280 to 320 nm) transmission and edge steepness. 1). The deposition is further assisted bands. Examples of new sources in- Optical filters with good perfor- by a secondary ion gun, which ac- clude more efficient mid-UV lasers, mance in the mid-UV are crucial for celerates a mixture of inert ions di- AlGaN LEDs and more conventional enabling important new instruments rectly onto the substrate to densify based on applications including bio- and compact the coating films. O + broadband sources such as high- 2 pressure mercury and xenon arc chemical absorption, fluorescence ions often are introduced into the lamps with improved efficiency and and spectroscopy, as well as for re- deposition region near the surface longer lifetimes.
    [Show full text]
  • Gaining High Resolution Measurements of Optical Filters in the NIR Range with the LAMBDA 1050 UV/Vis/NIR
    APPLICATION NOTE UV/Vis/NIR Spectroscopy Authors: Christopher Lynch PerkinElmer, Inc. Shelton, CT Gaining High Resolution Measurements of Optical The most common measurement for Filters in the NIR Range optical filter quality testing is done in transmission mode with the results With the LAMBDA 1050 typically displayed in %T. The measurement may be performed at any UV/Vis/NIR angle of incidence required by the filter design. The angle of incidence light used can range from normal to greater than 60 ° with 45 ° being one of the most common requirements. When measurements are to be performed at angles other than normal, typically considered to be between 5 °- 8 °, polarization affects need to be considered. All modern high performance spectrophotometers use reflective gratings to disperse the source energy into specific wavelengths. This process will create strongly polarized light which will be used for sample analysis. For this reason, to achieve the truest results a depolarizer should be used at angles higher than 8 ° to measure a sample under random polarization conditions. If specific angles of polarization are required by the analysis, a polarizer should be added to allow the specific angle of polarization to be measured. This could range from S to P polarization or any angle between. Optical filter types and design requirements vary widely from Optical filters have many functions, including color correction, simple neutral density filters to the most complex multi layer used to improve color balance in many optical systems, to bandpass designs. All have specific design requirements and all neutral density filters that produce specific reduction in the require spectroscopic analysis to validate designs and for quality level of transmitted light.
    [Show full text]
  • Optical Filter Glass 2020
    Advanced Optics SCHOTT AG Hattenbergstrasse 10 55122 Mainz Germany Phone +49 (0)6131/66-1812 Optical Filter [email protected] Glass www.schott.com/ advanced_optics 2020 10431 ENGLISH 01/2020 kn/schmidt Printed in Germany SCHOTT Optical Filter Glass 2020 Optical Filter Glass 2 SCHOTT is a leading international technology group in the areas of specialty glass and glass- ceramics. With more than 130 years of outstanding development, materials and technology expertise we offer a broad portfolio of high-quality products and intelligent solutions that contribute to our customers’ success. SCHOTT Advanced Optics, with its deep technological expertise, is a valuable partner for its customers in developing products and customized solutions for applications in optics, lithography, astronomy, opto-electronics, life sciences, and research. With a product portfolio of more than 120 optical glasses, special materials and components, we master the value chain: from customized glass development to high-precision optical product finishing and metrology. SCHOTT: Your Partner for Excellence in Optics. 3 4 Contents Part I · Optical Filter Glass – Description 3 Optical properties ......................................18 3.1 Refractive index .......................................... 18 3.2 Reflection loss at the glass-air interface ................ 18 Foreword ......................................................... 8 3.3 Transmittance and internal transmittance ............. 19 3.4 Derived optical filter data ...............................21 Webshop
    [Show full text]
  • Translucency Perception: a Review
    Journal of Vision (2021) 21(8):4, 1–41 1 Translucency perception: A review Norwegian University of Science and Technology, Davit Gigilashvili Department of Computer Science, Gjøvik, Norway Norwegian University of Science and Technology, Jean-Baptiste Thomas Department of Computer Science, Gjøvik, Norway Norwegian University of Science and Technology, Jon Yngve Hardeberg Department of Computer Science, Gjøvik, Norway Norwegian University of Science and Technology, Marius Pedersen Department of Computer Science, Gjøvik, Norway Translucency is an optical and a perceptual phenomenon Internationale de l’Eclairage) total appearance “points that characterizes subsurface light transport through out the visual aspects of objects and scenes” (Pointer, objects and materials. Translucency as an optical 2006). Translucency is among the most essential visual property of a material relates to the radiative transfer attributes of appearance, along with color, gloss, and inside and through this medium, and translucency as a texture (Pointer, 2006; Eugène, 2008), remaining the perceptual phenomenon describes the visual sensation least studied one among those (Anderson, 2011). experienced by humans when observing a given material Although the color information incident on the human under given conditions. The knowledge about the visual retina encodes important information about the objects mechanisms of the translucency perception remains and materials, overall sensation also depends “on the limited. Accurate prediction of the appearance of the appearance of that colour due to the relationship translucent objects can have a significant commercial between the light transmitted, the light reflected, and impact in the fields such as three-dimensional printing. the light scattered by the body of the object” (Pointer, However, little is known how the optical properties of a material relate to a perception evoked in humans.
    [Show full text]